journal article·2022-11-04Open access

Cloning the Dirac cones of bilayer graphene to the zone center by selenium adsorption

Meng-Kai Lin, Jun Zhao, Joseph A. Hlevyack, T.-C. Chiang

Abstract

Abstract Dirac cones can foster extraordinary electronic effects, as exemplified by the case of graphene layers. Angle-resolved photoemission reveals that adsorption of selenium (Se) vapor on bilayer graphene creates a symmetric hybrid clone of the Dirac cones at the zone center. A detailed analysis aided by first-principles calculations shows that the adsorbed layer consists of an ordered array of Se8 molecules. The uncovered cloning mechanism illustrates a method to generate electronic features of scientific and technological interests by gentle surface modification via van der Waals adsorption.
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Research context

OpenAlex topics: Graphene research and applications · Topological Materials and Phenomena · Fullerene Chemistry and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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